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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 14:37:38 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 14:37:38 +0000
commitae581a19fbe896a797450b9d9573fb66f2735227 (patch)
tree56c40be8518a29c9351364d13a9676aa83932dc0 /lib/util/hexchar.c
parentInitial commit. (diff)
downloadsudo-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.c103
1 files changed, 103 insertions, 0 deletions
diff --git a/lib/util/hexchar.c b/lib/util/hexchar.c
new file mode 100644
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--- /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]);
+}