1#include "base.h"
2#include "inet_ntop_cache.h"
3#include "sys-socket.h"
4
5#include <sys/types.h>
6
7#include <string.h>
8
9const char * inet_ntop_cache_get_ip(server *srv, sock_addr *addr) {
10#ifdef HAVE_IPV6
11	size_t ndx = 0, i;
12	for (i = 0; i < INET_NTOP_CACHE_MAX; i++) {
13		if (srv->inet_ntop_cache[i].ts != 0 && srv->inet_ntop_cache[i].family == addr->plain.sa_family) {
14			if (srv->inet_ntop_cache[i].family == AF_INET6 &&
15			    0 == memcmp(srv->inet_ntop_cache[i].addr.ipv6.s6_addr, addr->ipv6.sin6_addr.s6_addr, 16)) {
16				/* IPv6 found in cache */
17				break;
18			} else if (srv->inet_ntop_cache[i].family == AF_INET &&
19				   srv->inet_ntop_cache[i].addr.ipv4.s_addr == addr->ipv4.sin_addr.s_addr) {
20				/* IPv4 found in cache */
21				break;
22
23			}
24		}
25	}
26
27	if (i == INET_NTOP_CACHE_MAX) {
28		/* not found in cache */
29
30		i = ndx;
31		inet_ntop(addr->plain.sa_family,
32			  addr->plain.sa_family == AF_INET6 ?
33			  (const void *) &(addr->ipv6.sin6_addr) :
34			  (const void *) &(addr->ipv4.sin_addr),
35			  srv->inet_ntop_cache[i].b2, INET6_ADDRSTRLEN);
36
37		srv->inet_ntop_cache[i].ts = srv->cur_ts;
38		srv->inet_ntop_cache[i].family = addr->plain.sa_family;
39
40		if (srv->inet_ntop_cache[i].family == AF_INET) {
41			srv->inet_ntop_cache[i].addr.ipv4.s_addr = addr->ipv4.sin_addr.s_addr;
42		} else if (srv->inet_ntop_cache[i].family == AF_INET6) {
43			memcpy(srv->inet_ntop_cache[i].addr.ipv6.s6_addr, addr->ipv6.sin6_addr.s6_addr, 16);
44		}
45	}
46
47	return srv->inet_ntop_cache[i].b2;
48#else
49	UNUSED(srv);
50	return inet_ntoa(addr->ipv4.sin_addr);
51#endif
52}
53