2 * This file is part of DisOrder
3 * Copyright (C) 2004, 2005 Richard Kettlewell
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
31 char *hex(const uint8_t *ptr, size_t n) {
32 char *buf = xmalloc_noptr(n * 2 + 1), *p = buf;
35 p += sprintf(p, "%02x", (unsigned)*ptr++);
39 int unhexdigitq(int c) {
51 case 'a': case 'A': return 10;
52 case 'b': case 'B': return 11;
53 case 'c': case 'C': return 12;
54 case 'd': case 'D': return 13;
55 case 'e': case 'E': return 14;
56 case 'f': case 'F': return 15;
61 int unhexdigit(int c) {
64 if((d = unhexdigitq(c)) < 0) error(0, "invalid hex digit");
68 uint8_t *unhex(const char *s, size_t *np) {
73 if((l = strlen(s)) & 1) {
74 error(0, "hex string has odd length");
77 p = buf = xmalloc_noptr(l / 2);
79 if((d1 = unhexdigit(*s++)) < 0) return 0;
80 if((d2 = unhexdigit(*s++)) < 0) return 0;