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
inet_ntop_cache_get_ip(server * srv,sock_addr * addr)9 const 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