protocol 2 tty modes support; ok markus@

1 files changed, 96 insertions, 0 deletions

diff --git a/usr.bin/ssh/sshtty.c b/usr.bin/ssh/sshtty.c
new file mode 100644
index 00000000000..78498908fc6
--- /dev/null
+++ b/usr.bin/ssh/sshtty.c
@@ -0,0 +1,96 @@
+/* $OpenBSD: sshtty.c,v 1.1 2001/04/14 16:33:20 stevesk Exp $ */
+/*
+ * Author: Tatu Ylonen <ylo@cs.hut.fi>
+ * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
+ *                    All rights reserved
+ *
+ * As far as I am concerned, the code I have written for this software
+ * can be used freely for any purpose.  Any derived versions of this
+ * software must be clearly marked as such, and if the derived work is
+ * incompatible with the protocol description in the RFC file, it must be
+ * called by a name other than "ssh" or "Secure Shell".
+ */
+/*
+ * Copyright (c) 2001 Markus Friedl.  All rights reserved.
+ * Copyright (c) 2001 Kevin Steves.  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 THE AUTHOR ``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 AUTHOR 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.
+ */
+
+#include "includes.h"
+
+#include "sshtty.h"
+#include "log.h"
+
+static struct termios _saved_tio;
+static int _in_raw_mode = 0;
+
+int
+in_raw_mode(void)
+{
+	return _in_raw_mode;	
+}
+
+struct termios
+get_saved_tio(void)
+{
+	return _saved_tio;
+}
+
+void
+leave_raw_mode(void)
+{
+	if (!_in_raw_mode)
+		return;
+	if (tcsetattr(fileno(stdin), TCSADRAIN, &_saved_tio) == -1)
+		perror("tcsetattr");
+	else
+		_in_raw_mode = 0;
+
+	fatal_remove_cleanup((void (*) (void *)) leave_raw_mode, NULL);
+}
+
+void
+enter_raw_mode(void)
+{
+	struct termios tio;
+
+	if (tcgetattr(fileno(stdin), &tio) == -1) {
+		perror("tcgetattr");
+		return;
+	}
+	_saved_tio = tio;
+	tio.c_iflag |= IGNPAR;
+	tio.c_iflag &= ~(ISTRIP | INLCR | IGNCR | ICRNL | IXON | IXANY | IXOFF);
+	tio.c_lflag &= ~(ISIG | ICANON | ECHO | ECHOE | ECHOK | ECHONL);
+#ifdef IEXTEN
+	tio.c_lflag &= ~IEXTEN;
+#endif
+	tio.c_oflag &= ~OPOST;
+	tio.c_cc[VMIN] = 1;
+	tio.c_cc[VTIME] = 0;
+	if (tcsetattr(fileno(stdin), TCSADRAIN, &tio) == -1)
+		perror("tcsetattr");
+	else
+		_in_raw_mode = 1;
+
+	fatal_add_cleanup((void (*) (void *)) leave_raw_mode, NULL);
+}