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#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 __lookup_ipliteral(struct address buf[static 1], const char *name, int family)
{
struct in_addr a4;
struct in6_addr a6;
if (__inet_aton(name, &a4) > 0) {
if (family == AF_INET6) /* wrong family */
return EAI_NONAME;
memcpy(&buf[0].addr, &a4, sizeof a4);
buf[0].family = AF_INET;
buf[0].scopeid = 0;
return 1;
}
char tmp[64];
char *p = strchr(name, '%'), *z;
unsigned long long scopeid = 0;
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;
if (family == AF_INET) /* wrong family */
return EAI_NONAME;
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;
}
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