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plugins/sudoers/strlcpy_unesc.c
50 строк
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Todd C. Miller
Remove Open Source PVS-Studio comments
28 сен 2025, 18:40
28 сен 2025, 18:40
2a33699
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/* * 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. */ #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); }