Implement hardwareflow varable in tip(1) like Solaris and hf in /etc/remote.

Based on PR 3411 from Matthew Gream
Also document "tandem" variable (XON/XOFF) in tip man page.

6 files changed, 63 insertions, 13 deletions

diff --git a/usr.bin/tip/cmds.c b/usr.bin/tip/cmds.c
index 1ef949cec9f..e55574f0032 100644
--- a/usr.bin/tip/cmds.c
+++ b/usr.bin/tip/cmds.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: cmds.c,v 1.16 2003/06/03 02:56:18 millert Exp $	*/
+/*	$OpenBSD: cmds.c,v 1.17 2003/09/20 18:15:32 millert Exp $	*/
 /*	$NetBSD: cmds.c,v 1.7 1997/02/11 09:24:03 mrg Exp $	*/
 
 /*
@@ -34,7 +34,7 @@
 #if 0
 static char sccsid[] = "@(#)cmds.c	8.1 (Berkeley) 6/6/93";
 #endif
-static const char rcsid[] = "$OpenBSD: cmds.c,v 1.16 2003/06/03 02:56:18 millert Exp $";
+static const char rcsid[] = "$OpenBSD: cmds.c,v 1.17 2003/09/20 18:15:32 millert Exp $";
 #endif /* not lint */
 
 #include "tip.h"
@@ -783,6 +783,13 @@ variable()
 		vtable[PARITY].v_access &= ~CHANGED;
 		setparity(NOSTR);
 	}
+	if (vtable[HARDWAREFLOW].v_access&CHANGED) {
+		vtable[HARDWAREFLOW].v_access &= ~CHANGED;
+		if (boolean(value(HARDWAREFLOW)))
+			hardwareflow("on");
+		else
+			hardwareflow("off");
+	}
 }
 
 void
@@ -809,7 +816,7 @@ listvariables()
 			break;
 		case BOOL:
 			printf(" %s\r\n",
-			    boolean(p->v_value) == '!' ? "false" : "true");
+			    !boolean(p->v_value) ? "false" : "true");
 			break;
 		case CHAR:
 			vis(buf, character(p->v_value), VIS_WHITE|VIS_OCTAL, 0);
@@ -841,6 +848,23 @@ tandem(option)
 }
 
 /*
+ * Turn hardware flow control on or off for remote tty.
+ */
+void
+hardwareflow(option)
+	char *option;
+{
+	struct termios	rmtty;
+
+	tcgetattr(FD, &rmtty);
+	if (strcmp(option, "on") == 0)
+		rmtty.c_iflag |= CRTSCTS;
+	else
+		rmtty.c_iflag &= ~CRTSCTS;
+	tcsetattr(FD, TCSADRAIN, &rmtty);
+}
+
+/*
  * Send a break.
  */
 void
diff --git a/usr.bin/tip/remote.c b/usr.bin/tip/remote.c
index a93c5e24413..e02e0feeaad 100644
--- a/usr.bin/tip/remote.c
+++ b/usr.bin/tip/remote.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: remote.c,v 1.12 2003/06/03 02:56:18 millert Exp $	*/
+/*	$OpenBSD: remote.c,v 1.13 2003/09/20 18:15:32 millert Exp $	*/
 /*	$NetBSD: remote.c,v 1.5 1997/04/20 00:02:45 mellon Exp $	*/
 
 /*
@@ -41,7 +41,7 @@ static const char copyright[] =
 #if 0
 static char sccsid[] = "@(#)remote.c	8.1 (Berkeley) 6/6/93";
 #endif
-static const char rcsid[] = "$OpenBSD: remote.c,v 1.12 2003/06/03 02:56:18 millert Exp $";
+static const char rcsid[] = "$OpenBSD: remote.c,v 1.13 2003/09/20 18:15:32 millert Exp $";
 #endif /* not lint */
 
 #include <stdio.h>
@@ -182,6 +182,8 @@ getremcap(host)
 		setboolean(value(HALFDUPLEX), 1);
 	if (cgetflag("dc"))
 		setboolean(value(DC), 1);
+	if (cgetflag("hf"))
+		setboolean(value(HARDWAREFLOW), 1);
 	if (RE == NOSTR)
 		RE = (char *)"tip.record";
 	if (EX == NOSTR)
diff --git a/usr.bin/tip/tip.1 b/usr.bin/tip/tip.1
index 87d05926a7c..8a675d673cd 100644
--- a/usr.bin/tip/tip.1
+++ b/usr.bin/tip/tip.1
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: tip.1,v 1.28 2003/09/04 22:14:43 jmc Exp $
+.\"	$OpenBSD: tip.1,v 1.29 2003/09/20 18:15:32 millert Exp $
 .\"	$NetBSD: tip.1,v 1.7 1994/12/08 09:31:05 jtc Exp $
 .\"
 .\" Copyright (c) 1980, 1990, 1993
@@ -342,8 +342,8 @@ and
 .Dq eofwrite
 variables are used to recognize end-of-file when reading, and specify
 end-of-file when writing (see below).
-File transfers normally depend on tandem mode for flow control.
-If the remote system does not support tandem mode,
+File transfers normally depend on hardwareflow or tandem mode for flow control.
+If the remote system does not support hardwareflow or tandem mode,
 .Dq echocheck
 may be set to indicate
 .Nm
@@ -474,6 +474,12 @@ default value is
 (num) The amount of data (in bytes) to buffer between filesystem
 writes when receiving files; abbreviated
 .Ar fr .
+.It Ar hardwareflow
+(bool) Whether hardware flow control (CRTSCTS) is enabled for the
+connection; abbreviated
+.Ar hf ;
+default value is
+.Ql off .
 .It Ar host
 (str) The name of the host to which you are connected; abbreviated
 .Ar ho .
@@ -536,6 +542,18 @@ beautification rules.
 default value is
 .Ar false .
 Each tab is expanded to 8 spaces.
+.It Ar tandem
+(bool) Use XON/XOFF flow control to throttle data from the remote host;
+abbreviated
+.Ar ta .
+The default value is
+.Ar true
+unless the
+.Ar nt
+capability has been specified in
+.Pa /etc/remote ,
+in which case the default value is
+.Ar false.
 .It Ar verbose
 (bool) Verbose mode; abbreviated
 .Ar verb ;
diff --git a/usr.bin/tip/tip.c b/usr.bin/tip/tip.c
index ace375b273a..b7b16439479 100644
--- a/usr.bin/tip/tip.c
+++ b/usr.bin/tip/tip.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: tip.c,v 1.20 2003/06/03 02:56:18 millert Exp $	*/
+/*	$OpenBSD: tip.c,v 1.21 2003/09/20 18:15:32 millert Exp $	*/
 /*	$NetBSD: tip.c,v 1.13 1997/04/20 00:03:05 mellon Exp $	*/
 
 /*
@@ -40,7 +40,7 @@ static const char copyright[] =
 #if 0
 static char sccsid[] = "@(#)tip.c	8.1 (Berkeley) 6/6/93";
 #endif
-static const char rcsid[] = "$OpenBSD: tip.c,v 1.20 2003/06/03 02:56:18 millert Exp $";
+static const char rcsid[] = "$OpenBSD: tip.c,v 1.21 2003/09/20 18:15:32 millert Exp $";
 #endif /* not lint */
 
 /*
@@ -537,6 +537,8 @@ ttysetup(speed)
 	cntrl.c_cflag |= CS8;
 	if (boolean(value(DC)))
 		cntrl.c_cflag |= CLOCAL;
+	if (boolean(value(HARDWAREFLOW)))
+		cntrl.c_cflag |= CRTSCTS;	
 	cntrl.c_iflag &= ~(ISTRIP|ICRNL);
 	cntrl.c_oflag &= ~OPOST;
 	cntrl.c_lflag &= ~(ICANON|ISIG|IEXTEN|ECHO);
diff --git a/usr.bin/tip/tip.h b/usr.bin/tip/tip.h
index ddf281dceb0..3540f144eb7 100644
--- a/usr.bin/tip/tip.h
+++ b/usr.bin/tip/tip.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: tip.h,v 1.15 2003/06/03 02:56:18 millert Exp $	*/
+/*	$OpenBSD: tip.h,v 1.16 2003/09/20 18:15:32 millert Exp $	*/
 /*	$NetBSD: tip.h,v 1.7 1997/04/20 00:02:46 mellon Exp $	*/
 
 /*
@@ -223,6 +223,7 @@ extern value_t	vtable[];	/* variable table */
 #define HALFDUPLEX	30
 #define	LECHO		31
 #define	PARITY		32
+#define	HARDWAREFLOW	33
 
 #define NOVAL	((value_t *)NULL)
 #define NOACU	((acu_t *)NULL)
@@ -286,6 +287,7 @@ void	cumain(int argc, char *argv[]);
 void	daemon_uid(void);
 void	disconnect(char *reason);
 void	execute(char *s);
+void	hardwareflow(char *option);
 void	logent(char *group, char *num, char *acu, char *message);
 void	loginit(void);
 void	prtime(char *s, time_t a);
diff --git a/usr.bin/tip/vars.c b/usr.bin/tip/vars.c
index 424c9e317d7..46cec2dd5b2 100644
--- a/usr.bin/tip/vars.c
+++ b/usr.bin/tip/vars.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: vars.c,v 1.4 2003/06/03 02:56:18 millert Exp $	*/
+/*	$OpenBSD: vars.c,v 1.5 2003/09/20 18:15:32 millert Exp $	*/
 /*	$NetBSD: vars.c,v 1.3 1994/12/08 09:31:19 jtc Exp $	*/
 
 /*
@@ -34,7 +34,7 @@
 #if 0
 static char sccsid[] = "@(#)vars.c	8.1 (Berkeley) 6/6/93";
 #endif
-static const char rcsid[] = "$OpenBSD: vars.c,v 1.4 2003/06/03 02:56:18 millert Exp $";
+static const char rcsid[] = "$OpenBSD: vars.c,v 1.5 2003/09/20 18:15:32 millert Exp $";
 #endif /* not lint */
 
 #include "tip.h"
@@ -110,5 +110,7 @@ value_t vtable[] = {
 	  "le",		(char *)FALSE },
 	{ "parity",	STRING|INIT|IREMOTE,	(READ|WRITE)<<PUBLIC,
 	  "par",	(char *)&PA },
+	{ "hardwareflow", BOOL,			(READ|WRITE)<<PUBLIC,
+	  "hf",		(char *)FALSE },
 	{ NOSTR, NULL, NULL, NOSTR, NOSTR }
 };