1 files changed, 47 insertions, 25 deletions

diff --git a/util-src/net.c b/util-src/net.c
index e307c628..32f69025 100644
--- a/util-src/net.c
+++ b/util-src/net.c
@@ -14,29 +14,32 @@
 #include <errno.h>
 
 #ifndef _WIN32
-  #include <sys/ioctl.h>
-  #include <sys/types.h>
-  #include <sys/socket.h>
-  #include <net/if.h>
-  #include <ifaddrs.h>
-  #include <arpa/inet.h>
-  #include <netinet/in.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <net/if.h>
+#include <ifaddrs.h>
+#include <arpa/inet.h>
+#include <netinet/in.h>
 #endif
 
 #include <lua.h>
 #include <lauxlib.h>
 
+#if (LUA_VERSION_NUM == 501)
+#define luaL_setfuncs(L, R, N) luaL_register(L, NULL, R)
+#endif
+
 /* Enumerate all locally configured IP addresses */
 
-const char * const type_strings[] = {
+const char *const type_strings[] = {
 	"both",
 	"ipv4",
 	"ipv6",
 	NULL
 };
 
-static int lc_local_addresses(lua_State *L)
-{
+static int lc_local_addresses(lua_State *L) {
 #ifndef _WIN32
 	/* Link-local IPv4 addresses; see RFC 3927 and RFC 5735 */
 	const long ip4_linklocal = htonl(0xa9fe0000); /* 169.254.0.0 */
@@ -50,68 +53,87 @@ static int lc_local_addresses(lua_State *L)
 	const char ipv6 = (type == 0 || type == 2);
 
 #ifndef _WIN32
-	if (getifaddrs(&addr) < 0) {
+
+	if(getifaddrs(&addr) < 0) {
 		lua_pushnil(L);
 		lua_pushfstring(L, "getifaddrs failed (%d): %s", errno,
-		strerror(errno));
+		                strerror(errno));
 		return 2;
 	}
+
 #endif
 	lua_newtable(L);
 
 #ifndef _WIN32
-	for (a = addr; a; a = a->ifa_next) {
+
+	for(a = addr; a; a = a->ifa_next) {
 		int family;
 		char ipaddr[INET6_ADDRSTRLEN];
 		const char *tmp = NULL;
 
-		if (a->ifa_addr == NULL || a->ifa_flags & IFF_LOOPBACK)
+		if(a->ifa_addr == NULL || a->ifa_flags & IFF_LOOPBACK) {
 			continue;
+		}
 
 		family = a->ifa_addr->sa_family;
 
-		if (ipv4 && family == AF_INET) {
+		if(ipv4 && family == AF_INET) {
 			struct sockaddr_in *sa = (struct sockaddr_in *)a->ifa_addr;
-			if (!link_local &&((sa->sin_addr.s_addr & ip4_mask) == ip4_linklocal))
+
+			if(!link_local && ((sa->sin_addr.s_addr & ip4_mask) == ip4_linklocal)) {
 				continue;
+			}
+
 			tmp = inet_ntop(family, &sa->sin_addr, ipaddr, sizeof(ipaddr));
-		} else if (ipv6 && family == AF_INET6) {
+		} else if(ipv6 && family == AF_INET6) {
 			struct sockaddr_in6 *sa = (struct sockaddr_in6 *)a->ifa_addr;
-			if (!link_local && IN6_IS_ADDR_LINKLOCAL(&sa->sin6_addr))
+
+			if(!link_local && IN6_IS_ADDR_LINKLOCAL(&sa->sin6_addr)) {
 				continue;
-			if (IN6_IS_ADDR_V4MAPPED(&sa->sin6_addr) || IN6_IS_ADDR_V4COMPAT(&sa->sin6_addr))
+			}
+
+			if(IN6_IS_ADDR_V4MAPPED(&sa->sin6_addr) || IN6_IS_ADDR_V4COMPAT(&sa->sin6_addr)) {
 				continue;
+			}
+
 			tmp = inet_ntop(family, &sa->sin6_addr, ipaddr, sizeof(ipaddr));
 		}
 
-		if (tmp != NULL) {
+		if(tmp != NULL) {
 			lua_pushstring(L, tmp);
 			lua_rawseti(L, -2, n++);
 		}
+
 		/* TODO: Error reporting? */
 	}
 
 	freeifaddrs(addr);
 #else
-	if (ipv4) {
+
+	if(ipv4) {
 		lua_pushstring(L, "0.0.0.0");
 		lua_rawseti(L, -2, n++);
 	}
-	if (ipv6) {
+
+	if(ipv6) {
 		lua_pushstring(L, "::");
 		lua_rawseti(L, -2, n++);
 	}
+
 #endif
 	return 1;
 }
 
-int luaopen_util_net(lua_State* L)
-{
+int luaopen_util_net(lua_State *L) {
+#if (LUA_VERSION_NUM > 501)
+	luaL_checkversion(L);
+#endif
 	luaL_Reg exports[] = {
 		{ "local_addresses", lc_local_addresses },
 		{ NULL, NULL }
 	};
 
-	luaL_register(L, "net",  exports);
+	lua_newtable(L);
+	luaL_setfuncs(L, exports, 0);
 	return 1;
 }