MiniDLNA update: 1.0.19.1 to 1.0.20
[tomato.git] / release / src / router / iproute2 / lib / ll_addr.c
blob581487dfaff0f3e620ea0eed036431a4d6aa70cb
1 /*
2 * ll_addr.c
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
9 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
12 #include <stdio.h>
13 #include <stdlib.h>
14 #include <unistd.h>
15 #include <syslog.h>
16 #include <fcntl.h>
17 #include <sys/ioctl.h>
18 #include <sys/socket.h>
19 #include <sys/ioctl.h>
20 #include <netinet/in.h>
21 #include <arpa/inet.h>
22 #include <string.h>
24 #include <linux/netdevice.h>
25 #include <linux/if_arp.h>
26 #include <linux/sockios.h>
28 #include "rt_names.h"
29 #include "utils.h"
32 const char *ll_addr_n2a(unsigned char *addr, int alen, int type, char *buf, int blen)
34 int i;
35 int l;
37 if (alen == 4 &&
38 (type == ARPHRD_TUNNEL || type == ARPHRD_SIT || type == ARPHRD_IPGRE)) {
39 return inet_ntop(AF_INET, addr, buf, blen);
41 l = 0;
42 for (i=0; i<alen; i++) {
43 if (i==0) {
44 snprintf(buf+l, blen, "%02x", addr[i]);
45 blen -= 2;
46 l += 2;
47 } else {
48 snprintf(buf+l, blen, ":%02x", addr[i]);
49 blen -= 3;
50 l += 3;
53 return buf;
56 /*NB: lladdr is char * (rather than u8 *) because sa_data is char * (1003.1g) */
57 int ll_addr_a2n(char *lladdr, int len, char *arg)
59 if (strchr(arg, '.')) {
60 inet_prefix pfx;
61 if (get_addr_1(&pfx, arg, AF_INET)) {
62 fprintf(stderr, "\"%s\" is invalid lladdr.\n", arg);
63 return -1;
65 if (len < 4)
66 return -1;
67 memcpy(lladdr, pfx.data, 4);
68 return 4;
69 } else {
70 int i;
72 for (i=0; i<len; i++) {
73 int temp;
74 char *cp = strchr(arg, ':');
75 if (cp) {
76 *cp = 0;
77 cp++;
79 if (sscanf(arg, "%x", &temp) != 1) {
80 fprintf(stderr, "\"%s\" is invalid lladdr.\n", arg);
81 return -1;
83 if (temp < 0 || temp > 255) {
84 fprintf(stderr, "\"%s\" is invalid lladdr.\n", arg);
85 return -1;
87 lladdr[i] = temp;
88 if (!cp)
89 break;
90 arg = cp;
92 return i+1;