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-rw-r--r--lib/util/cfmakeraw.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/lib/util/cfmakeraw.c b/lib/util/cfmakeraw.c
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+++ b/lib/util/cfmakeraw.c
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+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2019-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <termios.h>
+
+#include "sudo_compat.h"
+
+/* Non-standard termios input flags */
+#ifndef IUCLC
+# define IUCLC 0
+#endif
+#ifndef IMAXBEL
+# define IMAXBEL 0
+#endif
+
+/* Non-standard termios local flags */
+#ifndef IEXTEN
+# define IEXTEN 0
+#endif
+
+/*
+ * Set termios to raw mode (BSD extension).
+ */
+void
+sudo_cfmakeraw(struct termios *term)
+{
+ /* Set terminal to raw mode */
+ CLR(term->c_iflag,
+ IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON|IMAXBEL|IUCLC);
+ CLR(term->c_oflag, OPOST);
+ CLR(term->c_lflag, ECHO|ECHONL|ICANON|ISIG|IEXTEN);
+ CLR(term->c_cflag, CSIZE|PARENB);
+ SET(term->c_cflag, CS8);
+ term->c_cc[VMIN] = 1;
+ term->c_cc[VTIME] = 0;
+}