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1.1 misho 1: /*
2: * Copyright (c) 2013 Todd C. Miller <Todd.Miller@courtesan.com>
3: *
4: * Permission to use, copy, modify, and distribute this software for any
5: * purpose with or without fee is hereby granted, provided that the above
6: * copyright notice and this permission notice appear in all copies.
7: *
8: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15: */
16:
17: #include <config.h>
18:
19: #include <sys/types.h>
20: #include <stdio.h>
21:
22: #include "missing.h"
23: #include "sudo_debug.h"
1.1.1.2 ! misho 24: #include "fatal.h"
1.1 misho 25:
26: int
27: hexchar(const char *s)
28: {
29: unsigned char result[2];
30: int i;
31: debug_decl(hexchar, SUDO_DEBUG_UTIL)
32:
33: for (i = 0; i < 2; i++) {
34: switch (s[i]) {
35: case '0':
36: result[i] = 0;
37: break;
38: case '1':
39: result[i] = 1;
40: break;
41: case '2':
42: result[i] = 2;
43: break;
44: case '3':
45: result[i] = 3;
46: break;
47: case '4':
48: result[i] = 4;
49: break;
50: case '5':
51: result[i] = 5;
52: break;
53: case '6':
54: result[i] = 6;
55: break;
56: case '7':
57: result[i] = 7;
58: break;
59: case '8':
60: result[i] = 8;
61: break;
62: case '9':
63: result[i] = 9;
64: break;
65: case 'A':
66: case 'a':
67: result[i] = 10;
68: break;
69: case 'B':
70: case 'b':
71: result[i] = 11;
72: break;
73: case 'C':
74: case 'c':
75: result[i] = 12;
76: break;
77: case 'D':
78: case 'd':
79: result[i] = 13;
80: break;
81: case 'E':
82: case 'e':
83: result[i] = 14;
84: break;
85: case 'F':
86: case 'f':
87: result[i] = 15;
88: break;
89: default:
90: /* Should not happen. */
91: fatalx("internal error, \\x%s not in proper hex format", s);
92: }
93: }
94: debug_return_int((result[0] << 4) | result[1]);
95: }