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lighttpd 1.4.41

    1: #include "first.h"
    2: 
    3: #include "base.h"
    4: #include "inet_ntop_cache.h"
    5: #include "sys-socket.h"
    6: 
    7: #include <sys/types.h>
    8: 
    9: #include <string.h>
   10: 
   11: const char * inet_ntop_cache_get_ip(server *srv, sock_addr *addr) {
   12: #ifdef HAVE_IPV6
   13: 	size_t ndx = 0, i;
   14: 	for (i = 0; i < INET_NTOP_CACHE_MAX; i++) {
   15: 		if (srv->inet_ntop_cache[i].ts != 0 && srv->inet_ntop_cache[i].family == addr->plain.sa_family) {
   16: 			if (srv->inet_ntop_cache[i].family == AF_INET6 &&
   17: 			    0 == memcmp(srv->inet_ntop_cache[i].addr.ipv6.s6_addr, addr->ipv6.sin6_addr.s6_addr, 16)) {
   18: 				/* IPv6 found in cache */
   19: 				break;
   20: 			} else if (srv->inet_ntop_cache[i].family == AF_INET &&
   21: 				   srv->inet_ntop_cache[i].addr.ipv4.s_addr == addr->ipv4.sin_addr.s_addr) {
   22: 				/* IPv4 found in cache */
   23: 				break;
   24: 
   25: 			}
   26: 		}
   27: 	}
   28: 
   29: 	if (i == INET_NTOP_CACHE_MAX) {
   30: 		/* not found in cache */
   31: 
   32: 		i = ndx;
   33: 		inet_ntop(addr->plain.sa_family,
   34: 			  addr->plain.sa_family == AF_INET6 ?
   35: 			  (const void *) &(addr->ipv6.sin6_addr) :
   36: 			  (const void *) &(addr->ipv4.sin_addr),
   37: 			  srv->inet_ntop_cache[i].b2, INET6_ADDRSTRLEN);
   38: 
   39: 		srv->inet_ntop_cache[i].ts = srv->cur_ts;
   40: 		srv->inet_ntop_cache[i].family = addr->plain.sa_family;
   41: 
   42: 		if (srv->inet_ntop_cache[i].family == AF_INET) {
   43: 			srv->inet_ntop_cache[i].addr.ipv4.s_addr = addr->ipv4.sin_addr.s_addr;
   44: 		} else if (srv->inet_ntop_cache[i].family == AF_INET6) {
   45: 			memcpy(srv->inet_ntop_cache[i].addr.ipv6.s6_addr, addr->ipv6.sin6_addr.s6_addr, 16);
   46: 		}
   47: 	}
   48: 
   49: 	return srv->inet_ntop_cache[i].b2;
   50: #else
   51: 	UNUSED(srv);
   52: 	return inet_ntoa(addr->ipv4.sin_addr);
   53: #endif
   54: }