1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
| | #include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <net/if.h>
#include <arpa/inet.h>
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "lookup.h"
int __inet_aton(const char *, struct in_addr *);
int __lookup_ipliteral(struct address buf[static 1], const char *name, int family)
{
struct in_addr a4;
struct in6_addr a6;
if (family != AF_INET6 && __inet_aton(name, &a4)>0) {
memcpy(&buf[0].addr, &a4, sizeof a4);
buf[0].family = AF_INET;
buf[0].scopeid = 0;
return 1;
}
if (family != AF_INET) {
char tmp[64];
char *p = strchr(name, '%'), *z;
unsigned long long scopeid;
if (p && p-name < 64) {
memcpy(tmp, name, p-name);
tmp[p-name] = 0;
name = tmp;
}
if (inet_pton(AF_INET6, name, &a6)<=0) return 0;
memcpy(&buf[0].addr, &a6, sizeof a6);
buf[0].family = AF_INET6;
if (p) {
if (isdigit(*++p)) scopeid = strtoull(p, &z, 10);
else z = p-1;
if (*z) {
if (!IN6_IS_ADDR_LINKLOCAL(&a6) &&
!IN6_IS_ADDR_MC_LINKLOCAL(&a6))
return EAI_NONAME;
scopeid = if_nametoindex(p);
if (!scopeid) return EAI_NONAME;
}
if (scopeid > UINT_MAX) return EAI_NONAME;
buf[0].scopeid = scopeid;
}
return 1;
}
return 0;
}
|