From f8e5c55a036f0e2e2a958e30456270f3f9eba933 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 14:52:13 +0200 Subject: Adding upstream version 1.9.5p2. Signed-off-by: Daniel Baumann --- lib/util/ttysize.c | 71 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 lib/util/ttysize.c (limited to 'lib/util/ttysize.c') diff --git a/lib/util/ttysize.c b/lib/util/ttysize.c new file mode 100644 index 0000000..221ea92 --- /dev/null +++ b/lib/util/ttysize.c @@ -0,0 +1,71 @@ +/* + * SPDX-License-Identifier: ISC + * + * Copyright (c) 2010-2012, 2014-2015 Todd C. Miller + * + * 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 + +#include +#include +#include +#include /* for struct winsize on HP-UX */ +#include + +#include "sudo_compat.h" +#include "sudo_debug.h" +#include "sudo_util.h" + +static int +get_ttysize_ioctl(int *rowp, int *colp) +{ + struct winsize wsize; + debug_decl(get_ttysize_ioctl, SUDO_DEBUG_UTIL); + + if (ioctl(STDERR_FILENO, TIOCGWINSZ, &wsize) == 0 && + wsize.ws_row != 0 && wsize.ws_col != 0) { + *rowp = wsize.ws_row; + *colp = wsize.ws_col; + debug_return_int(0); + } + debug_return_int(-1); +} + +void +sudo_get_ttysize_v1(int *rowp, int *colp) +{ + debug_decl(sudo_get_ttysize, SUDO_DEBUG_UTIL); + + if (get_ttysize_ioctl(rowp, colp) == -1) { + char *p; + + /* Fall back on $LINES and $COLUMNS. */ + if ((p = getenv("LINES")) == NULL || + (*rowp = sudo_strtonum(p, 1, INT_MAX, NULL)) <= 0) { + *rowp = 24; + } + if ((p = getenv("COLUMNS")) == NULL || + (*colp = sudo_strtonum(p, 1, INT_MAX, NULL)) <= 0) { + *colp = 80; + } + } + + debug_return; +} -- cgit v1.2.3