1 /*
2 * SPDX-License-Identifier: ISC
3 *
4 * Copyright (c) 2010-2016 Todd C. Miller <Todd.Miller@sudo.ws>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 /*
20 * This is an open source non-commercial project. Dear PVS-Studio, please check it.
21 * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
22 */
23
24 #include <config.h>
25 #include <string.h>
26 #ifdef HAVE_STRINGS_H
27 # include <strings.h>
28 #endif /* HAVE_STRINGS_H */
29
30 #include "sudo_compat.h"
31 #include "sudo_debug.h"
32 #include "sudo_util.h"
33
34 int
sudo_strtobool_v1(const char * str)35 sudo_strtobool_v1(const char *str)
36 {
37 debug_decl(sudo_strtobool, SUDO_DEBUG_UTIL);
38
39 switch (*str) {
40 case '0':
41 case '1':
42 if (str[1] == '\0')
43 debug_return_int(*str - '0');
44 break;
45 case 'y':
46 case 'Y':
47 if (strcasecmp(str, "yes") == 0)
48 debug_return_int(1);
49 break;
50 case 't':
51 case 'T':
52 if (strcasecmp(str, "true") == 0)
53 debug_return_int(1);
54 break;
55 case 'o':
56 case 'O':
57 if (strcasecmp(str, "on") == 0)
58 debug_return_int(1);
59 if (strcasecmp(str, "off") == 0)
60 debug_return_int(0);
61 break;
62 case 'n':
63 case 'N':
64 if (strcasecmp(str, "no") == 0)
65 debug_return_int(0);
66 break;
67 case 'f':
68 case 'F':
69 if (strcasecmp(str, "false") == 0)
70 debug_return_int(0);
71 break;
72 }
73 sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
74 "invalid boolean value \"%s\"", str);
75
76 debug_return_int(-1);
77 }
78