Path: utzoo!mnetor!uunet!lll-winken!lll-tis!ames!pasteur!ucbvax!ucsd!sdcsvax!ucsdhub!hp-sdd!hplabs!felix!dhw68k!macintosh
From: jdb@mordor.s1.gov (John Bruner)
Newsgroups: comp.sources.mac
Subject: UW v4.2 (part 3 of 9)
Message-ID: <6515@dhw68k.cts.com>
Date: 5 Apr 88 16:05:46 GMT
References: <6493@dhw68k.cts.com> <6497@dhw68k.cts.com>
Sender: macintosh@dhw68k.cts.com
Organization: Lawrence Livermore National Laboratory, S-1 Project
Lines: 1027
Approved: bytebug@dhw68k.cts.com (Roger L. Long)

[UW v4.2 - part 3 of 9]

---
#! /bin/sh
# This is a shell archive, meaning:
# 1. Remove everything above the #! /bin/sh line.
# 2. Save the resulting text in a file.
# 3. Execute the file with /bin/sh (not csh) to create the files:
#	h/openpty.h
#	h/uw_clk.h
#	h/uw_err.h
#	h/uw_fd.h
#	h/uw_ipc.h
#	h/uw_opt.h
#	h/uw_param.h
#	h/uw_pcl.h
#	h/uw_win.h
#	h/uwlib.h
# This archive created: Mon Apr  4 07:51:49 1988
# By:	Roger L. Long (macintosh@dhw68k.cts.com)
export PATH; PATH=/bin:$PATH
if test ! -d h
then
	echo shar: mkdir h
	mkdir h
fi
echo shar: extracting "'h/openpty.h'" '(308 characters)'
if test -f 'h/openpty.h'
then
	echo shar: will not over-write existing file "'h/openpty.h'"
else
sed 's/^X//' << \SHAR_EOF > 'h/openpty.h'
X/*
X *	This file defines the "ptydesc" structure which is returned
X *	by the routine "openpty".
X */
X
Xstruct ptydesc {
X	int		pt_pfd;		/* file descriptor of master side */
X	int		pt_tfd;		/* file descriptor of slave side */
X	char		*pt_pname;	/* master device name */
X	char		*pt_tname;	/* slave device name */
X};
SHAR_EOF
if test 308 -ne "`wc -c < 'h/openpty.h'`"
then
	echo shar: error transmitting "'h/openpty.h'" '(should have been 308 characters)'
fi
fi # end of overwriting check
echo shar: extracting "'h/uw_clk.h'" '(1161 characters)'
if test -f 'h/uw_clk.h'
then
	echo shar: will not over-write existing file "'h/uw_clk.h'"
else
sed 's/^X//' << \SHAR_EOF > 'h/uw_clk.h'
X/*
X *	uw_clk - timer support for UW
X *
X * Copyright 1986 by John D. Bruner.  All rights reserved.  Permission to
X * copy this program is given provided that the copy is not sold and that
X * this copyright notice is included.
X */
X
X#ifndef UW_CLK
X#define	UW_CLK
X
X/*
X * Events which are supposed to occur at a certain time are handled by
X * setting "timeout"s.  The list of timeouts is sorted in order of
X * occurrence.  The "alarm" mechanism is used to send SIGALRM when the
X * first timeout expires.  However, the timeout is not processed
X * immediately.  Instead, it will be processed upon exit from the
X * select() in main().  This prevents timeouts from happening at
X * inappropriate times.
X *
X * The resolution of timeouts is in seconds.  The server doesn't need
X * any better resolution, and this allows all of the hair associated with
X * (struct timeval) and (struct itimerval) types to be avoided.
X */
X
X#define	CLK_HZ		1		/* one tick/second */
X
Xtypedef long toarg_t;
X
Xstruct timeout {
X	struct timeout	*to_next;
X	time_t		to_when;
X	void		(*to_fn)();
X	toarg_t		to_arg;
X};
X
Xextern int timer_rdy;
X
X#define	CLK_CHECK()	if (timer_rdy) clk_service(); else
X#endif
SHAR_EOF
if test 1161 -ne "`wc -c < 'h/uw_clk.h'`"
then
	echo shar: error transmitting "'h/uw_clk.h'" '(should have been 1161 characters)'
fi
fi # end of overwriting check
echo shar: extracting "'h/uw_err.h'" '(759 characters)'
if test -f 'h/uw_err.h'
then
	echo shar: will not over-write existing file "'h/uw_err.h'"
else
sed 's/^X//' << \SHAR_EOF > 'h/uw_err.h'
X/*
X *	uw error codes
X *
X * Copyright 1986 by John D. Bruner.  All rights reserved.  Permission to
X * copy this program is given provided that the copy is not sold and that
X * this copyright notice is included.
X */
X
X#ifndef UW_ERR
X#define	UW_ERR
X
Xtypedef int uwerr_t;
X
X#define	UWE_NONE	0		/* no error */
X#define	UWE_ERRNO	1		/* system call error, consult errno */
X#define	UWE_NXTYPE	2		/* nonexistent window type */
X#define	UWE_DUPID	3		/* window ID duplicated (in use) */
X#define	UWE_NOTIMPL	4		/* operation not implemented yet */
X#define	UWE_NXSERV	5		/* non-existent server */
X#define	UWE_NOMEM	6		/* unable to allocate required memory */
X#define	UWE_INVAL	7		/* invalid argument to function */
X#define	UWE_NOCTL	8		/* no control file descriptor */
X
X#endif
SHAR_EOF
if test 759 -ne "`wc -c < 'h/uw_err.h'`"
then
	echo shar: error transmitting "'h/uw_err.h'" '(should have been 759 characters)'
fi
fi # end of overwriting check
echo shar: extracting "'h/uw_fd.h'" '(1488 characters)'
if test -f 'h/uw_fd.h'
then
	echo shar: will not over-write existing file "'h/uw_fd.h'"
else
sed 's/^X//' << \SHAR_EOF > 'h/uw_fd.h'
X/*
X *	uw_fd - file-descriptor/select data
X *
X * Copyright 1986 by John D. Bruner.  All rights reserved.  Permission to
X * copy this program is given provided that the copy is not sold and that
X * this copyright notice is included.
X */
X
X#ifndef UW_FD
X#define	UW_FD
X
X#include "uw_param.h"
X
X/*
X * If FD_SET and friends aren't defined in <sys/types.h>, then we
X * provide simple definitions here.
X */
X#ifndef FD_SET
X#define	FD_SET(n,p)	((p)->fds_bits[0] |= (1 << (n)))
X#define	FD_CLR(n,p)	((p)->fds_bits[0] &= ~(1 << (n)))
X#define	FD_ISSET(n,p)	((p)->fds_bits[0] & (1 << (n)))
X#define	FD_ZERO(p)	((p)->fds_bits[0] = 0)
X#define	FD_SETSIZE	(NBBY*sizeof(long))
X#endif
X
X/*
X * We use file descriptors for several different things.  "fdmap" associates
X * a file descriptor number with its use.
X */
Xtypedef enum {				/* file descriptor type */
X	FDT_NONE,			/*	not in use */
X	FDT_DATA,			/*	data connection for window */
X	FDT_CTL,			/*	control connection for window */
X	FDT_MAC,			/*	tty line which talks to Mac */
X	FDT_UDSOCK,			/*	UNIX-domain datagram socket */
X	FDT_ISSOCK,			/*	Internet-domain stream sock */
X	FDT_DEBUG,			/*	debugging use */
X	FDT_OTHER			/*	other uses */
X} fdtype_t;
X
Xstruct fdmap {
X	fdtype_t	f_type;		/* file descriptor type */
X	struct window	*f_win;		/* associate window (if any) */
X};
X
Xstruct selmask {
X	struct fd_set	sm_rd;
X	struct fd_set	sm_wt;
X	struct fd_set	sm_ex;
X};
X
Xextern struct fdmap fdmap[FD_SETSIZE];
Xextern fildes_t nfds;
Xextern struct selmask selmask[2];
X#endif
SHAR_EOF
if test 1488 -ne "`wc -c < 'h/uw_fd.h'`"
then
	echo shar: error transmitting "'h/uw_fd.h'" '(should have been 1488 characters)'
fi
fi # end of overwriting check
echo shar: extracting "'h/uw_ipc.h'" '(5403 characters)'
if test -f 'h/uw_ipc.h'
then
	echo shar: will not over-write existing file "'h/uw_ipc.h'"
else
sed 's/^X//' << \SHAR_EOF > 'h/uw_ipc.h'
X/*
X *	uw IPC definitions
X *
X * Copyright 1986 by John D. Bruner.  All rights reserved.  Permission to
X * copy this program is given provided that the copy is not sold and that
X * this copyright notice is included.
X */
X
X#ifndef UW_IPC
X#define	UW_IPC
X
X/*
X * UW accepts network connections in both the UNIX domain and the
X * Internet domain.  UNIX domain datagrams are used by processes on
X * the local machine to create new windows and to change the value
X * of window parameters (window options).  TCP (Internet stream)
X * connections are used by local and non-local processes which wish
X * to handle their own host activity (e.g. pseudo-terminal handling).
X *
X * Some of the definitions in this file duplicate definitions in the
X * UW server source code, because this file is also intended for use
X * with the UW library.
X *
X * The code which performs byte-order conversions knows the size of the
X * types defined in this file (since there is no typeof() operator).
X */
X
X#define	UIPC_ENV	"UW_UIPC"	/* Unix-domain port environment var */
X#define	INET_ENV	"UW_INET"	/* Internet-domain port environ var */
X
Xtypedef long uwid_t;			/* unique window identifier */
X
Xtypedef short uwcmd_t;			/* commands: */
X#define	UWC_NEWW	0		/*	create new window */
X#define	UWC_NEWT	1		/*	create new tty window */
X#define	UWC_STATUS	2		/*	creation status message */
X#define	UWC_KILLW	3		/*	kill existing window */
X#define	UWC_OPTION	4		/*	act upon window option */
X
Xtypedef short uwoptcmd_t;		/* option subcommands: */
X#define	UWOC_SET	0		/*	set value of option */
X#define	UWOC_ASK	2		/*	ask for value of option */
X#define	UWOC_DO		4		/*	report changes in value */
X#define	UWOC_DONT	5		/*	don't report changes */
X#define	UWOC_WILL	6		/*	will report changes */
X#define	UWOC_WONT	7		/*	won't report changes */
X
Xtypedef short uwtype_t;			/* window type (see also uw_win.h): */
X#define	UWT_ADM31	0		/*	ADM-31 */
X#define	UWT_VT52	1		/*	VT-52 */
X#define	UWT_ANSI	2		/*	ANSI */
X#define	UWT_TEK4010	3		/*	Tektronix 4010 */
X#define	UWT_FTP		4		/*	file transfer */
X#define	UWT_PRINT	5		/*	output to Macintosh printer */
X#define	UWT_PLOT	6		/*	plot window */
X
Xtypedef short uwopt_t;			/* window option number: */
X#define	UWOP_VIS	1		/*	visibility */
X#define	UWOP_TYPE	2		/*	window type */
X#define	UWOP_POS	3		/*	window position */
X#define	UWOP_TITLE	4		/*	window title */
X#define	UWOP_WSIZE	5		/*	window size (in bits) */
X
X#define	UWOP_TSIZE	8		/*	terminal size (row,col) */
X#define	UWOP_TFONTSZ	9		/*	small/large font size */
X#define	UWOP_TCLIPB	10		/*	clipboard/mouse encoding */
X#define	UWOP_TBELL	11		/*	audible, visual bell */
X#define	UWOP_TCURS	12		/*	cursor shape */
X
Xunion uwoptval {
X	unsigned char	uwov_1bit;
X	unsigned char	uwov_6bit;
X	unsigned short	uwov_12bit;
X	struct {
X		unsigned short v,h;
X	}		uwov_point;
X	char		uwov_string[256];
X};
X
X
X/*
X * UWC_NEWW: create a new window
X *
X * This command is only valid when it is sent as the first message on an
X * Internet stream socket.  The remote port is the data fd for the window.
X * If a control fd is desired, its port number is contained in "uwnt_ctlport"
X */
Xstruct uwneww {
X	uwid_t		uwnw_id;	/* unique window identifier */
X	uwtype_t	uwnw_type;	/* window type */
X	short		uwnw_ctlport;	/* port number of control fd */
X};
X
X/*
X * UWC_NEWT: create a new tty window
X *
X * This command is only valid when it is sent as a datagram to the Unix-domain
X * socket.  It must be accompanied by an access right (file descriptor) for
X * the master side of a pty.  The server takes over all responsibilities for
X * this window.  "uwnt_pty" is variable-length.
X */
Xstruct uwnewt {
X	uwid_t		uwnt_id;	/* unique window identifier */
X	uwtype_t	uwnt_type;	/* window type */
X	char		uwnt_pty[1];	/* name of associated pty */
X};
X
X/*
X * UWC_STATUS: status report for UWC_NEWW
X *
X * This type of packet is sent by the server to the data fd in response
X * to a UWC_NEWW.  It specifies whether the window was successfully
X * created and what unique ID was assigned.
X */
Xstruct uwstatus {
X	uwid_t		uwst_id;	/* unique window identifier */
X	short		uwst_err;	/* error status */
X	short		uwst_errno;	/* UNIX error code (see <errno.h>) */
X};
X
X/*
X * UWC_KILLW: kill the window
X *
X * This command may be sent to either the Unix-domain socket or the control
X * file descriptor of an external window.  In the latter case, "uwkw_id"
X * must match the ID of the window associated with the file descriptor.
X */
Xstruct uwkillw {
X	uwid_t		uwkw_id;	/* unique window identifier */
X};
X
X/*
X * UWC_OPTION: act upon window option
X *
X * This command may be sent to either the Unix-domain socket or the control
X * file descriptor of an external window.  In the former case, only the
X * UWOC_SET command is processed.
X */
Xstruct uwoption {
X	uwid_t		uwop_id;	/* unique window identifier */
X	uwopt_t		uwop_opt;	/* option number */
X	uwoptcmd_t	uwop_cmd;	/* option subcommand */
X	union uwoptval	uwop_val;	/* option value (for UWOC_SET) */
X};
X
Xstruct uwipc {
X	unsigned short	uwip_len;	/* length of this message */
X	uwcmd_t		uwip_cmd;	/* command (message type) */
X	union {
X		struct uwneww uwipu_neww;
X		struct uwnewt uwipu_newt;
X		struct uwstatus uwipu_status;
X		struct uwkillw uwipu_killw;
X		struct uwoption uwipu_option;
X	}		uwip_u;
X#define	uwip_neww	uwip_u.uwipu_neww
X#define	uwip_newt	uwip_u.uwipu_newt
X#define	uwip_status	uwip_u.uwipu_status
X#define	uwip_killw	uwip_u.uwipu_killw
X#define	uwip_option	uwip_u.uwipu_option
X};
X
X#endif
SHAR_EOF
if test 5403 -ne "`wc -c < 'h/uw_ipc.h'`"
then
	echo shar: error transmitting "'h/uw_ipc.h'" '(should have been 5403 characters)'
fi
fi # end of overwriting check
echo shar: extracting "'h/uw_opt.h'" '(6447 characters)'
if test -f 'h/uw_opt.h'
then
	echo shar: will not over-write existing file "'h/uw_opt.h'"
else
sed 's/^X//' << \SHAR_EOF > 'h/uw_opt.h'
X/*
X *	uw window options
X *
X * Copyright 1986 by John D. Bruner.  All rights reserved.  Permission to
X * copy this program is given provided that the copy is not sold and that
X * this copyright notice is included.
X *
X * Some protocols support the transmission of window options.  A window
X * option is a parameter (or collection of related parameters) which
X * describes the layout, appearance, or other characteristic of a
X * window.  Some options are common to all window types, while others
X * are window emulation-specific.
X *
X * Window options may be "set" by one side on its own initiative or in
X * response to an "inquiry" from the other side.  In addition, one side
X * may request that the other side "report" changes in options.
X *
X * Options are passed as part of a "new window" command or as part of
X * an "option" command (as defined by the protocol, above).  The option
X * format has been chosen to minimize the need for protocol encoding
X * of special or meta characters.
X */
X
X#ifndef	UW_OPT
X#define	UW_OPT
X
Xtypedef unsigned int woptcmd_t;		/* window option command: */
X#define	WOC_SET		0		/*	request current option value */
X#define	WOC_INQUIRE	2		/*	report current option value */
X#define	WOC_DO		4		/*	do report changes to option */
X#define	WOC_DONT	5		/*	don't report changes */
X#define	WOC_WILL	6		/*	will report changes */
X#define	WOC_WONT	7		/*	won't report changes */
X#define	WOC_MASK	7		/*	mask */
X#define	WOC_BADCMD(n)	((n)==1 || (n)==3)
X
X/*
X * Option commands include an option number specifier.  If the option
X * number is in the range 1-14 a short-form specifier can be used;
X * otherwise, a long-form specifier must be used.  Option (sub)command
X * bytes consist of 7 bits of data.  The lower order 3 bits specify the
X * option command.  The next higher 4 bits specify the option number.
X * The value zero is reserved (as described below).  If the option
X * number is greater than 14, these four bits specify 017 (15) and the
X * option number is specified in a second byte.  The value is encoded
X * by adding ' ' to the option number.  Multiple options may be specified
X * in one command -- the last option is followed by a reference to
X * "option" 0 (as an endmarker).
X */
X
Xtypedef unsigned int woption_t;		/* window option number: */
X#define	WONUM_MIN	1		/*	minimum option number */
X#define	WONUM_GENERIC	7		/*	maximum generic option number */
X#define	WONUM_SHORT	14		/*	maximum short option number */
X#define	WONUM_MAX	31		/*	maximum option number */
X#define	WONUM_MASK	(017<<3)	/*	mask for extraction */
X#define	WONUM_USELONG(n) ((unsigned)(n) > WONUM_SHORT)
X#define	WONUM_SENCODE(n) (((n)&017)<<3)	/* 	short encoding function */
X#define	WONUM_SDECODE(b) (((b)>>3)&017)	/* 	short decoding function */
X#define	WONUM_LPREFIX	(017<<3)	/*	long encoding prefix */
X#define	WONUM_LENCODE(n) ((n)+' ')	/* 	long encoding function */
X#define	WONUM_LDECODE(c) (((c)&0177)-' ') /* 	long decoding function */
X
X
X/*
X * The following option numbers are generic (recognized for all window
X * types):
X */
X#define	WOG_END		0		/* [endmarker] */
X#define	WOG_VIS		1		/* 0=invisible, 1=visible */
X#define	WOG_TYPE	2		/* window emulation type (see below) */
X#define	WOG_POS		3		/* window position on screen */
X#define	WOG_TITLE	4		/* window title */
X#define	WOG_SIZE	5		/* window size (in bits) */
X#define	WOG_6		6		/* unassigned, reserved */
X#define	WOG_7		7		/* unassigned, reserved */
X
X/*
X * Option arguments immediately follow option (sub)command bytes.  They are
X * encoded to prevent interference with flow-control and IAC recognition.
X * Three types of options are recognized: non-graphic character strings of
X * fixed length, general character strings of variable length, and binary
X * numbers of fixed width.
X *
X * Non-graphic character strings are transmitted directly.  They CANNOT
X * include IAC, XON, or XOFF and should not include "meta" characters.
X *
X * General character strings are encoded in the UW protocol fashion: "meta"
X * characters and special characters are escaped.  The string is terminated
X * with a null byte.  The string may not exceed some predetermined maximum
X * number of characters (which may be less than or equal to 256, including
X * the terminating null byte).
X *
X * Binary numbers are transmitted in 6-bit chunks, least-significant bits
X * first.  The number of 6-bit chunks required depends upon the width of
X * the number.  The 0100 bit in each byte is always set to prevent
X * collisions with special characters (such as flow control and IAC).
X */
X
X/*
X * Implementation:
X *
X * Arrays of type "woptarg_t" are used to describe the arguments associated
X * with each option.  (Note that arguments are associated only with
X * the "set" option subcommand.)
X */
X
Xtypedef unsigned woptarg_t;		/* option argument type: */
X#define	WOA_END		0		/*	endmarker */
X#define	WOA_CHARS(n)	((1<<8)|(n))	/*	"n" untranslated characters */
X#define	WOA_STRING(m)	((2<<8)|(m))	/*	string of max length "m" */
X#define	WOA_UDATA(b)	((3<<8)|(b))	/*	binary number "b" bits wide */
X#define	WOA_CMDMASK	0177400		/* command mask */
X
Xtypedef long woptbmask_t;		/* option bitmask (>= 32 bits wide) */
X#define	WOPT_SET(mask,bit)	((mask) |= (1<<(bit)))
X#define	WOPT_CLR(mask,bit)	((mask) &= ~(1<<(bit)))
X#define	WOPT_ISSET(mask,bit)	((mask) & (1<<(bit)))
X
Xstruct woptdefn {
X	woptbmask_t	wod_pending;	/* pending notifications to Mac */
X	woptbmask_t	wod_inquire;	/* pending inquiries from Mac */
X	woptbmask_t	wod_do;		/* pending DO commands to Mac */
X	woptbmask_t	wod_dont;	/* pending DONT commands to Mac */
X	woptbmask_t	wod_askrpt;	/* reports (of changes) we ask for */
X	struct woptlst {
X		woptarg_t	*wol_argdefn;	/* option argument definition */
X		char		*(*wol_get)();	/* called to get option value */
X		void		(*wol_set)();	/* called to set option value */
X		void		(*wol_ext)();	/* called for external window */
X	}		wod_optlst[WONUM_MAX+1];
X};
X
X/*
X * The following structure is used by routines that fetch and set option
X * values.
X */
Xunion optvalue {
X	unsigned char	ov_udata1;
X	unsigned char	ov_udata2;
X	unsigned char	ov_udata6;
X	unsigned short	ov_udata12;
X	struct {
X		unsigned short	v,h;
X	}		ov_point;
X	char		ov_string[256];
X};
X
X/*
X * When it is necessary to convert between host byte order and network
X * byte order, opt_netadj() is called.  A pointer to the following
X * structure is passed.
X */
Xstruct netadj {
X	short		(*na_short)();
X	long		(*na_long)();
X	unsigned short	(*na_ushort)();
X	unsigned long	(*na_ulong)();
X};
X
X#endif
SHAR_EOF
if test 6447 -ne "`wc -c < 'h/uw_opt.h'`"
then
	echo shar: error transmitting "'h/uw_opt.h'" '(should have been 6447 characters)'
fi
fi # end of overwriting check
echo shar: extracting "'h/uw_param.h'" '(1006 characters)'
if test -f 'h/uw_param.h'
then
	echo shar: will not over-write existing file "'h/uw_param.h'"
else
sed 's/^X//' << \SHAR_EOF > 'h/uw_param.h'
X/*
X *	uw parameters
X *
X * Copyright 1986 by John D. Bruner.  All rights reserved.  Permission to
X * copy this program is given provided that the copy is not sold and that
X * this copyright notice is included.
X */
X
X/*
X * This file exists because #include file definitions aren't in the same
X * place on all machines.  Also, it seems pointless to drag in all of
X * <stdio.h> just to define NULL.  Finally, a few declarations are
X * sufficiently global that this is the most logical place to put them.
X *
X * This file should be #included after all of the system include files
X * (e.g. <sys/types.h>) but before any other UW include files.
X */
X#ifndef UW_PARAM
X#define	UW_PARAM
X
Xtypedef int fildes_t;		/* this really should be in <sys/types.h> */
X
X#ifndef NBBY			/* this is in <sys/types.h> in 4.3BSD */
X#define	NBBY	8		/* (number of bits/byte) */
X#endif
X
X#ifndef NULL
X#define	NULL	0
X#endif
X
Xextern char *malloc();
Xextern char *mktemp();
Xextern char *getenv();
Xextern void done();
Xextern void cwait();
X
X#endif
SHAR_EOF
if test 1006 -ne "`wc -c < 'h/uw_param.h'`"
then
	echo shar: error transmitting "'h/uw_param.h'" '(should have been 1006 characters)'
fi
fi # end of overwriting check
echo shar: extracting "'h/uw_pcl.h'" '(9801 characters)'
if test -f 'h/uw_pcl.h'
then
	echo shar: will not over-write existing file "'h/uw_pcl.h'"
else
sed 's/^X//' << \SHAR_EOF > 'h/uw_pcl.h'
X/*
X *	uw protocol
X *
X * Copyright 1985,1986 by John D. Bruner.  All rights reserved.  Permission to
X * copy this program is given provided that the copy is not sold and that
X * this copyright notice is included.
X */
X
X#ifndef UW_PCL
X#define	UW_PCL
X
X#include "uw_win.h"
X
X/* UW may operate over connections which speak one of several protocols.
X * Internally these protocols are assigned numbers starting at zero.
X * Three such protocols are currently defined:
X *
X *	0: no special protocol
X *	1: original UW (v1.6, v2.10) protocol
X *	2: extended protocol (v3.x)
X */
X
X/*
X * Protocol 0:
X *
X * The connection between the Macintosh and the host is simply a serial
X * line.  Flow control may be enabled, but no special commands are
X * recognized.  Only one active window is supported.  This "protocol"
X * does not require the UW server; hence, there is no need to support it.
X */
X
X/*
X * Protocol 1: (original UW protocol)
X *
X * Two types of information are exchanged through the 7-bit serial line:
X * ordinary data and command bytes.  Command bytes are preceeded by
X * an IAC byte.  IAC bytes and literal XON/XOFF characters (those which
X * are not used for flow control) are sent by a P1_FN_CTLCH command.
X * Characters with the eighth bit set (the "meta" bit) are prefixed with
X * a P1_FN_META function.
X *
X * The next most-significant bit in the byte specifies the sender and
X * recipient of the command.  If this bit is clear (0), the command byte
X * was sent from the host computer to the Macintosh; if it is set (1)
X * the command byte was sent from the Macintosh to the host computer.
X * This prevents confusion in the event that the host computer
X * (incorrectly) echos a command back to the Macintosh.
X *
X * The remaining six bits are partitioned into two fields.  The low-order
X * three bits specify a window number from 1-7 (window 0 is reserved for
X * other uses) or another type of command-dependent parameter.  The next
X * three bits specify the operation to be performed by the recipient of
X * the command byte.
X *
X * Note that the choice of command bytes prevents the ASCII XON (021) and
X * XOFF (023) characters from being sent as commands.  P1_FN_ISELW commands
X * are only sent by the Macintosh (and thus are tagged with the P1_DIR_MTOH
X * bit).  Since XON and XOFF data characters are handled via P1_FN_CTLCH,
X * this allows them to be used for flow control purposes.
X */
X#define	P1_IAC		0001		/* interpret as command */
X#define	P1_DIR		0100		/* command direction: */
X#define	P1_DIR_HTOM	0000		/*	from host to Mac */
X#define	P1_DIR_MTOH	0100		/*	from Mac to host */
X#define	P1_FN		0070		/* function code: */
X#define	P1_FN_NEWW	0000		/*	new window */
X#define	P1_FN_KILLW	0010		/*	kill (delete) window */
X#define	P1_FN_ISELW	0020		/*	select window for input */
X#define	P1_FN_OSELW	0030		/*	select window for output */
X#define	P1_FN_META	0050		/*	add meta to next data char */
X#define	P1_FN_CTLCH	0060		/*	low 3 bits specify char */
X#define	P1_FN_MAINT	0070		/*	maintenance functions */
X#define	P1_WINDOW	0007		/* window number mask */
X#define	P1_CC		0007		/* control character specifier: */
X#define	P1_CC_IAC	1		/*	IAC */
X#define	P1_CC_XON	2		/*	XON */
X#define	P1_CC_XOFF	3		/*	XOFF */
X#define	P1_MF		0007		/* maintenance functions: */
X#define	P1_MF_ENTRY	0		/*	beginning execution */
X#define	P1_MF_ASKPCL	2		/*	request protocol negotiation */
X#define	P1_MF_CANPCL	3		/*	suggest protocol */
X#define	P1_MF_SETPCL	4		/*	set current protocol */
X#define	P1_MF_EXIT	7		/*	execution terminating */
X#define	P1_NWINDOW	7		/* maximum number of windows */
X
X/*
X * Protocol 2: (extended UW protocol)
X *
X * Protocol 2 is an extension of protocol 1.  The P2_FN_NEWW command and
X * the new command P2_FN_WOPT communicate window options between the host
X * and the Macintosh.  (See "uw_opt.h" for details.)
X */
X#define	P2_IAC		P1_IAC		/* interpret as command */
X#define	P2_DIR		P1_DIR		/* command direction: */
X#define	P2_DIR_HTOM	P1_DIR_HTOM	/*	from host to Mac */
X#define	P2_DIR_MTOH	P1_DIR_MTOH	/*	from Mac to host */
X#define	P2_FN		P1_FN		/* function code: */
X#define	P2_FN_NEWW	P1_FN_NEWW	/*	new window */
X#define	P2_FN_KILLW	P1_FN_KILLW	/*	kill (delete) window */
X#define	P2_FN_ISELW	P1_FN_ISELW	/*	select window for input */
X#define	P2_FN_OSELW	P1_FN_OSELW	/*	select window for output */
X#define	P2_FN_WOPT	0040		/*	communicate window options */
X#define	P2_FN_META	P1_FN_META	/*	add meta to next data char */
X#define	P2_FN_CTLCH	P1_FN_CTLCH	/*	low 3 bits specify char */
X#define	P2_FN_MAINT	P1_FN_MAINT	/*	maintenance functions */
X#define	P2_WINDOW	P1_WINDOW	/* window number mask */
X#define	P2_CC		P1_CC		/* control character specifier: */
X#define	P2_CC_IAC	P1_CC_IAC	/*	IAC */
X#define	P2_CC_XON	P1_CC_XON	/*	XON */
X#define	P2_CC_XOFF	P1_CC_XOFF	/*	XOFF */
X#define	P2_MF		P1_MF		/* maintenance functions: */
X#define	P2_MF_ENTRY	P1_MF_ENTRY	/*	beginning execution */
X#define	P2_MF_ASKPCL	P1_MF_ASKPCL	/*	request protocol negotiation */
X#define	P2_MF_CANPCL	P1_MF_CANPCL	/*	suggest protocol */
X#define	P2_MF_SETPCL	P1_MF_SETPCL	/*	set current protocol */
X#define	P2_MF_EXIT	P1_MF_EXIT	/*	execution terminating */
X#define	P2_NWINDOW	P1_NWINDOW	/* maximum number of windows */
X
X/*
X * Protocol negotiation
X *
X * The server is not used for protocol 0.  For the other protocols, the
X * Macintosh and the server negotiate to select the active protocol.  The
X * basic idea is that the Macintosh will express its desire for a protocol
X * and the server will attempt to satisfy that desire.  Until negotiations
X * are complete, protocol 1 is used.
X *
X * Protocols are identified by single-character names which are formed by
X * adding the ASCII code for a space (040) to the protocol number minus 1
X * (i.e. protocol 1 is ' ', protocol 2 is '!').
X *
X * P1_FN_CANPCL and P1_FN_SETPCL are three-byte commands: P1_IAC,
X * P1_FN_XXXPCL, protocol-name.
X *
X * Macintosh:
X *	If UW v2.10 is used on the Macintosh or if a newer Macintosh program
X *	wishes to use protocol 1, it will never initiate protocol negotiation.
X *	Hence, all interaction will use protocol 1 by default.
X *
X *	If the Macintosh program is capable of supporting protocol 2 and the
X *	user requests its use, the Mac will remember this fact but will
X *	continue to use protocol 1.  The Mac program will assume that no
X *	server is present until instructed otherwise by the user or until a
X *	P1_FN_ENTRY command is received (e.g. when the server starts up).
X *	At this time, the Mac program issues P1_FN_ASKPCL.  If the server
X *	cannot support protocol 2 (i.e. it is an old server), then it will
X *	ignore the P1_FN_ASKPCL.  The Macintosh will retry the P1_FN_ASKPCL
X *	a couple of times (about five seconds apart) and, if there is no
X *	response from the server, will abandon negotiations.  Protocol 1
X *	will be used for the remainder of the session.
X *
X *	If the server recognizes the P1_FN_ASKPCL command it will respond
X *	with the name of the most complex protocol it can support (currently
X *	'!').  If this is acceptable to the Macintosh, it will instruct the
X *	server to use this protocol.  If the Macintosh cannot support this
X *	protocol it will respond with a P1_FN_CANPCL suggesting a less-complex
X *	protocol.  If the server agrees to this it will answer establish the
X *	protocol; otherwise, it will suggest an even weaker protocol.
X *	Eventually someone will suggest protocol 1 (which is universal) and
X *	the other side will issue a P1_FN_SETPCL command to establish its use.
X *
X * Host:
X *	If the host receives a P1_FN_ASKPCL it will respond with the most
X *	complex protocol it can support (using the P1_FN_CANPCL command).
X *	Negotiations will proceed as described above until one side
X *	establishes a new protocol with P1_FN_SETPCL.  At this time, the
X *	host will switch to the new protocol.
X *
X *	If the host receives a P1_FN_ENTRY (P2_FN_ENTRY) command, it will
X *	switch back to protocol 1.  Receipt of this command indicates that
X *	the Macintosh program was restarted.  The Macintosh must initiate
X *	protocol negotiations again.
X */
X
X/*
X * Although many of the functions are identical (and the code is shared
X * between them), each protocol is accessed through a (struct protocol)
X * which specifies the functions for various operations.
X *
X * In theory, the main program knows nothing about the protocol in use.
X * In practice, the externally-visible functions are accessed as macros
X * for greater efficiency.
X *
X * The protocol layer is aware of the (struct window) data structures.
X */
X
Xstruct protocol {
X	char		p_name;		/* single-character protocol name */
X	nwin_t		p_maxwin;	/* maximum window number */
X	int		*p_ctlch;	/* control character map table */
X	unsigned	p_szctlch;	/* size (# of entries) in ctlch table */
X	void		(*p_entry)();	/* start up (ENTRY maintenance fn) */
X	void		(*p_exit)();	/* shut down (EXIT maintenance fn) */
X	void		(*p_renew)();	/* renew (re-init) */
X	struct window	*(*p_neww)();	/* create new window */
X	void		(*p_killw)();	/* kill window */
X	void		(*p_xmit)();	/* transmit to specified window */
X	void		(*p_recv)();	/* receive from Macintosh */
X	void		(*p_chkopt)();	/* check for pending option output */
X	void		(*p_sendopt)();	/* send option string to Macintosh */
X	void		(*p_askpcl)();	/* send an ASKPCL maintenance command */
X	void		(*p_canpcl)();	/* send a CANPCL maintenance command */
X	void		(*p_setpcl)();	/* send a SETPCL maintenance command */
X};
X
Xextern struct protocol *protocol;
X
X#define	PCL_NEWW(mfd,class,wtype,wnum,wid,dfd,cfd) \
X	(*protocol->p_neww)(mfd,class,wtype,wnum,(long)wid,dfd,cfd)
X#define	PCL_KILLW(mfd,w)	(*protocol->p_killw)(mfd,w)
X#define	PCL_RECV(mfd,buf,len)	(*protocol->p_recv)(mfd,buf,len)
X#define	PCL_XMIT(mfd,w)	(*protocol->p_xmit)(mfd,w)
X#define	PCL_SENDOPT(mfd,fn,buf,len) \
X	(protocol->p_sendopt ? (*protocol->p_sendopt)(mfd,fn,buf,len) : 0)
X#endif
SHAR_EOF
if test 9801 -ne "`wc -c < 'h/uw_pcl.h'`"
then
	echo shar: error transmitting "'h/uw_pcl.h'" '(should have been 9801 characters)'
fi
fi # end of overwriting check
echo shar: extracting "'h/uw_win.h'" '(3453 characters)'
if test -f 'h/uw_win.h'
then
	echo shar: will not over-write existing file "'h/uw_win.h'"
else
sed 's/^X//' << \SHAR_EOF > 'h/uw_win.h'
X/*
X *	uw window data definition
X *
X * Copyright 1986 by John D. Bruner.  All rights reserved.  Permission to
X * copy this program is given provided that the copy is not sold and that
X * this copyright notice is included.
X */
X
X#ifndef UW_WIN
X#define	UW_WIN
X
X#include "uw_opt.h"
X
X/*
X * A "point" is a pair of 16-bit integers.  This may specify the horizontal
X * and vertical position or size of a window.
X */
Xtypedef short npixel_t;			/* number of pixels */
Xstruct point {
X	npixel_t	v,h;
X};
X
X/*
X * The type of a window determines how it responds to I/O and which
X * window options it supports.  I'd like to declare these with an "enum",
X * but the stupid PCC screams if I use enums as array indices, so they
X * are defined via #define's instead.
X */
Xtypedef unsigned int wtype_t;		/* window type: */
X#define	WT_ADM31	0		/*	ADM-31 terminal emulation */
X#define	WT_VT52		1		/*	VT52 terminal emulation */
X#define	WT_ANSI		2		/*	ANSI terminal emulation */
X#define	WT_TEK4010	3		/*	Tek4010 terminal emulation */
X#define	WT_FTP		4		/*	file transfer */
X#define	WT_PRINT	5		/*	output to printer */
X#define	WT_PLOT		6		/*	plot window */
X#define	WT_MAXTYPE	6		/* maximum window type */
X
Xextern wtype_t defwtype;		/* default window type */
X
X/*
X * There are two basic classes of windows -- those which are processed
X * directly by the server and those which are processed by outside
X * programs.  Directly-handled windows are always terminal emulations.
X * Externally-handled windows may be any window type.
X */
Xtypedef enum {				/* window class: */
X	WC_INTERNAL,			/*	processed directly */
X	WC_EXTERNAL,			/*	processed externally */
X} wclass_t;
X
Xstruct window {
X	int		w_alloc;	/* window allocated if nonzero */
X	long		w_id;		/* window unique ID */
X	wtype_t		w_type;		/* window emulation type */
X	wclass_t	w_class;	/* window class */
X	fildes_t	w_datafd;	/* data file descriptor */
X	union {
X		struct winint {
X			char wi_tty[32];	/* terminal name */
X		}	wu_int;
X		struct winext {
X			fildes_t we_ctlfd;	/* control file descriptor */
X		}	wu_ext;
X	}		w_un;
X	struct woptdefn	w_optdefn;	/* window option definitions */
X	int		w_visible;	/* nonzero if window is visible */
X	struct point	w_position;	/* position of window on screen */
X	struct point	w_size;		/* size of window in pixels */
X	char		w_title[256];	/* window title */
X	char		*w_private;	/* storage private to emulation type */
X};
X#define	w_tty		w_un.wu_int.wi_tty
X#define	w_ctlfd		w_un.wu_ext.we_ctlfd
X
Xtypedef int nwin_t;			/* window index data type */
X
X/*
X * Some operations upon windows depend upon the window type.  For each
X * emulation type there is a "emulation" structure which specifies
X * emulation-specific data.
X */
Xstruct emulation {
X	struct woptdefn	we_optdefn;	/* window option definitions */
X	int		(*we_start)();	/* emulation setup code */
X	void		(*we_stop)();	/* emulation shutdown code */
X	void		(*we_setext)();	/* make changes req'd for extern win */
X};
X
Xextern struct window *win_neww();	/* create new window */
Xextern struct window *win_search();	/* convert window ID to window ptr */
X
X/*
X * The following macros convert between a window number and a pointer to
X * the corresponding window structure (and vice versa).
X *
X * NWINDOW *must* be >= P1_NWINDOW and >= P2_NWINDOW (in "uw_pcl.h").
X */
X#define	NWINDOW		7		/* maximum number of windows */
X#define	WIN_NUM(wptr)	((wptr)-window+1)
X#define	WIN_PTR(wnum)	(window+(wnum)-1)
Xextern struct window window[];		/* window data structures */
X#endif
SHAR_EOF
if test 3453 -ne "`wc -c < 'h/uw_win.h'`"
then
	echo shar: error transmitting "'h/uw_win.h'" '(should have been 3453 characters)'
fi
fi # end of overwriting check
echo shar: extracting "'h/uwlib.h'" '(1974 characters)'
if test -f 'h/uwlib.h'
then
	echo shar: will not over-write existing file "'h/uwlib.h'"
else
sed 's/^X//' << \SHAR_EOF > 'h/uwlib.h'
X/*
X *	uw library definitions
X *
X * Copyright 1986 by John D. Bruner.  All rights reserved.  Permission to
X * copy this program is given provided that the copy is not sold and that
X * this copyright notice is included.
X */
X
X#include "uw_err.h"
X#include "uw_ipc.h"
X
X#ifndef NBBY
X#define	NBBY		8		/* defined in <sys/types.h> in 4.3BSD */
X#endif
X
X#define	UW_NUMOPTS	32		/* number of window options */
X#define	UW_NWTYPES	6		/* number of window emulation types */
X
Xtypedef char uwtitle_t[256];
X
Xstruct uwpoint {
X	unsigned	uwp_v;		/* vertical component */
X	unsigned	uwp_h;		/* horizontal component */
X};
X
Xstruct uw_info {
X	uwid_t		uwi_id;		/* unique window ID */
X	int		uwi_datafd;	/* file descriptor for data */
X	int		uwi_ctlfd;	/* file descriptor for control */
X	uwerr_t		uwi_uwerr;	/* last error from UW */
X	int		uwi_errno;	/* last error from system call */
X	int		uwi_vis;	/* visiblility */
X	uwtype_t	uwi_type;	/* window type */
X	struct uwpoint	uwi_pos;	/* window position (in pixels) */
X	uwtitle_t	uwi_title;	/* window title */
X	struct uwpoint	uwi_wsize;	/* window size (in pixels) */
X	struct {
X		void	(*uwi_optfn)();	/* option handler */
X	}		uwi_options[UW_NUMOPTS];
X	int		uwi_ipclen;	/* length of data in IPC buffer */
X	struct uwipc	uwi_ipcbuf;	/* buffer for IPC messages */
X};
X
X#define	UW_DATAFD(uwin)		(uwin)->uwi_datafd
X#define	UW_ID(uwin)		(uwin)->uwi_id
X#define	UW_PERROR(uwin, mesg)	\
X	uw_perror(mesg, (uwin)->uwi_uwerr, (uwin)->uwi_errno)
X
Xtypedef struct uw_info *UWIN;
Xtypedef void (*uwfnptr_t)();
X
Xextern uwid_t uw_cmd();
Xextern UWIN uw_new();
Xextern uw_close(), uw_detach();
Xextern uw_optcmd();
Xextern uw_kill();
Xextern uwfnptr_t uw_optfn();
Xextern uw_rsetopt();
Xextern void uw_perror();
Xextern uwid_t uw_fork(), uw_cmd(), uw_shell();
X
Xextern uw_gvis(), uw_svis();
Xextern uw_gtype(), uw_stype();
Xextern uw_gtitle(), uw_stitle();
Xextern uw_gwsize(), uw_swsize();
Xextern uw_gpos(), uw_spos();
X
Xextern uwerr_t uwerrno;
Xextern char *uwerrlist[];
Xextern unsigned uwnerr;
SHAR_EOF
if test 1974 -ne "`wc -c < 'h/uwlib.h'`"
then
	echo shar: error transmitting "'h/uwlib.h'" '(should have been 1974 characters)'
fi
fi # end of overwriting check
#	End of shell archive
exit 0
--- end of part 3 ---