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12#include <stdio.h>
13#include <stdlib.h>
14#include <unistd.h>
15#include <fcntl.h>
16#include <sys/ioctl.h>
17#include <sys/socket.h>
18#include <netinet/in.h>
19#include <arpa/inet.h>
20#include <string.h>
21
22#include <linux/netdevice.h>
23#include <linux/if_arp.h>
24#include <linux/sockios.h>
25
26#include "rt_names.h"
27#include "utils.h"
28
29const char *ll_addr_n2a(const unsigned char *addr, int alen, int type,
30 char *buf, int blen)
31{
32 int i;
33 int l;
34
35 if (alen == 4 &&
36 (type == ARPHRD_TUNNEL || type == ARPHRD_SIT
37 || type == ARPHRD_IPGRE))
38 return inet_ntop(AF_INET, addr, buf, blen);
39
40 if (alen == 16 && (type == ARPHRD_TUNNEL6 || type == ARPHRD_IP6GRE))
41 return inet_ntop(AF_INET6, addr, buf, blen);
42
43 snprintf(buf, blen, "%02x", addr[0]);
44 for (i = 1, l = 2; i < alen && l < blen; i++, l += 3)
45 snprintf(buf + l, blen - l, ":%02x", addr[i]);
46 return buf;
47}
48
49
50int ll_addr_a2n(char *lladdr, int len, const char *arg)
51{
52 if (strchr(arg, '.')) {
53 inet_prefix pfx;
54 if (get_addr_1(&pfx, arg, AF_INET)) {
55 fprintf(stderr, "\"%s\" is invalid lladdr.\n", arg);
56 return -1;
57 }
58 if (len < 4)
59 return -1;
60 memcpy(lladdr, pfx.data, 4);
61 return 4;
62 } else {
63 int i;
64
65 for (i = 0; i < len; i++) {
66 int temp;
67 char *cp = strchr(arg, ':');
68 if (cp) {
69 *cp = 0;
70 cp++;
71 }
72 if (sscanf(arg, "%x", &temp) != 1) {
73 fprintf(stderr, "\"%s\" is invalid lladdr.\n",
74 arg);
75 return -1;
76 }
77 if (temp < 0 || temp > 255) {
78 fprintf(stderr, "\"%s\" is invalid lladdr.\n",
79 arg);
80 return -1;
81 }
82 lladdr[i] = temp;
83 if (!cp)
84 break;
85 arg = cp;
86 }
87 return i + 1;
88 }
89}
90