Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging
[qemu.git] / net / util.c
1 /*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25 #include "qemu/osdep.h"
26 #include "util.h"
27
28 int net_parse_macaddr(uint8_t *macaddr, const char *p)
29 {
30 int i;
31 char *last_char;
32 long int offset;
33
34 errno = 0;
35 offset = strtol(p, &last_char, 0);
36 if (errno == 0 && *last_char == '\0' &&
37 offset >= 0 && offset <= 0xFFFFFF) {
38 macaddr[3] = (offset & 0xFF0000) >> 16;
39 macaddr[4] = (offset & 0xFF00) >> 8;
40 macaddr[5] = offset & 0xFF;
41 return 0;
42 }
43
44 for (i = 0; i < 6; i++) {
45 macaddr[i] = strtol(p, (char **)&p, 16);
46 if (i == 5) {
47 if (*p != '\0') {
48 return -1;
49 }
50 } else {
51 if (*p != ':' && *p != '-') {
52 return -1;
53 }
54 p++;
55 }
56 }
57
58 return 0;
59 }