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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 14:37:38 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 14:37:38 +0000 |
commit | ae581a19fbe896a797450b9d9573fb66f2735227 (patch) | |
tree | 56c40be8518a29c9351364d13a9676aa83932dc0 /plugins/sudoers/strlcpy_unesc.c | |
parent | Initial commit. (diff) | |
download | sudo-upstream.tar.xz sudo-upstream.zip |
Adding upstream version 1.9.13p3.upstream/1.9.13p3upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-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..c8c89ac --- /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 *dst, const char *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); +} |