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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 13:14:46 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 13:14:46 +0000 |
commit | 025c439e829e0db9ac511cd9c1b8d5fd53475ead (patch) | |
tree | fa6986b4690f991613ffb97cea1f6942427baf5d /plugins/sudoers/strlcpy_unesc.c | |
parent | Initial commit. (diff) | |
download | sudo-025c439e829e0db9ac511cd9c1b8d5fd53475ead.tar.xz sudo-025c439e829e0db9ac511cd9c1b8d5fd53475ead.zip |
Adding upstream version 1.9.15p5.upstream/1.9.15p5upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'plugins/sudoers/strlcpy_unesc.c')
-rw-r--r-- | plugins/sudoers/strlcpy_unesc.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/plugins/sudoers/strlcpy_unesc.c b/plugins/sudoers/strlcpy_unesc.c new file mode 100644 index 0000000..3df6e8b --- /dev/null +++ b/plugins/sudoers/strlcpy_unesc.c @@ -0,0 +1,55 @@ +/* + * SPDX-License-Identifier: ISC + * + * Copyright (c) 2021 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 <sys/types.h> +#include <stdio.h> +#include <ctype.h> + +#include <sudoers.h> + +/* + * Like strlcpy() but collapses non-space chars escaped with a backslash. + */ +size_t +strlcpy_unescape(char *restrict dst, const char *restrict src, size_t size) +{ + size_t len = 0; + char ch; + debug_decl(strlcpy_unescape, SUDOERS_DEBUG_UTIL); + + while ((ch = *src++) != '\0') { + if (ch == '\\' && *src != '\0' && !isspace((unsigned char)*src)) + ch = *src++; + if (size > 1) { + *dst++ = ch; + size--; + } + len++; + } + if (size > 0) + *dst = '\0'; + + debug_return_size_t(len); +} |