73 lines
2.4 KiB
C
73 lines
2.4 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#pragma once
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <inttypes.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <sys/types.h>
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#include <uchar.h>
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#include "string-util.h"
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#include "missing.h"
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/* What characters are special in the shell? */
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/* must be escaped outside and inside double-quotes */
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#define SHELL_NEED_ESCAPE "\"\\`$"
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/* Those that can be escaped or double-quoted.
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*
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* Stricly speaking, ! does not need to be escaped, except in interactive
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* mode, but let's be extra nice to the user and quote ! in case this
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* output is ever used in interactive mode. */
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#define SHELL_NEED_QUOTES SHELL_NEED_ESCAPE GLOB_CHARS "'()<>|&;!"
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/* Note that we assume control characters would need to be escaped too in
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* addition to the "special" characters listed here, if they appear in the
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* string. Current users disallow control characters. Also '"' shall not
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* be escaped.
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*/
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#define SHELL_NEED_ESCAPE_POSIX "\\\'"
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typedef enum UnescapeFlags {
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UNESCAPE_RELAX = 1,
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} UnescapeFlags;
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typedef enum EscapeStyle {
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ESCAPE_BACKSLASH = 1,
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ESCAPE_POSIX = 2,
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} EscapeStyle;
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char *cescape(const char *s);
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char *cescape_length(const char *s, size_t n);
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size_t cescape_char(char c, char *buf);
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int cunescape(const char *s, UnescapeFlags flags, char **ret);
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int cunescape_length(const char *s, size_t length, UnescapeFlags flags, char **ret);
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int cunescape_length_with_prefix(const char *s, size_t length, const char *prefix, UnescapeFlags flags, char **ret);
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int cunescape_one(const char *p, size_t length, char32_t *ret, bool *eight_bit);
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char *xescape(const char *s, const char *bad);
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char *octescape(const char *s, size_t len);
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char *shell_escape(const char *s, const char *bad);
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char* shell_maybe_quote(const char *s, EscapeStyle style);
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