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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 /lib/util/hexchar.c | |
parent | Initial commit. (diff) | |
download | sudo-ae581a19fbe896a797450b9d9573fb66f2735227.tar.xz sudo-ae581a19fbe896a797450b9d9573fb66f2735227.zip |
Adding upstream version 1.9.13p3.upstream/1.9.13p3upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'lib/util/hexchar.c')
-rw-r--r-- | lib/util/hexchar.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/lib/util/hexchar.c b/lib/util/hexchar.c new file mode 100644 index 0000000..81cd619 --- /dev/null +++ b/lib/util/hexchar.c @@ -0,0 +1,103 @@ +/* + * SPDX-License-Identifier: ISC + * + * Copyright (c) 2013-2015, 2023 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 "sudo_compat.h" +#include "sudo_debug.h" +#include "sudo_util.h" + +/* + * Converts a two-byte hex string to decimal. + * Returns a value 0-255 on success or -1 for invalid input. + */ +int +sudo_hexchar_v1(const char *s) +{ + unsigned char result[2]; + int i; + debug_decl(sudo_hexchar, SUDO_DEBUG_UTIL); + + for (i = 0; i < 2; i++) { + switch (s[i]) { + case '0': + result[i] = 0; + break; + case '1': + result[i] = 1; + break; + case '2': + result[i] = 2; + break; + case '3': + result[i] = 3; + break; + case '4': + result[i] = 4; + break; + case '5': + result[i] = 5; + break; + case '6': + result[i] = 6; + break; + case '7': + result[i] = 7; + break; + case '8': + result[i] = 8; + break; + case '9': + result[i] = 9; + break; + case 'A': + case 'a': + result[i] = 10; + break; + case 'B': + case 'b': + result[i] = 11; + break; + case 'C': + case 'c': + result[i] = 12; + break; + case 'D': + case 'd': + result[i] = 13; + break; + case 'E': + case 'e': + result[i] = 14; + break; + case 'F': + case 'f': + result[i] = 15; + break; + default: + /* Invalid input. */ + debug_return_int(-1); + } + } + debug_return_int((result[0] << 4) | result[1]); +} |